05000335/LER-1979-035-03, /03L-0:on 791126,during Surveillance Test,One Channel of Refueling Water Tank Level Had Setpoint Out of Tolerance.Caused by Setpoint Drift in Channel Circuit. Setpoint Readjusted

/03L-0:on 791126,during Surveillance Test,One Channel of Refueling Water Tank Level Had Setpoint Out of Tolerance.Caused by Setpoint Drift in Channel Circuit. Setpoint Readjusted

ML17266A123
Person / Time
Site:	Saint Lucie
Issue date:	12/26/1979
From:	Shoppman M FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17207A729	List: 05000335/LER-1979-035, Forwards LER 79-035/03L-0 05000335/LER-1979-035-03, /03L-0:on 791126,during Surveillance Test,One Channel of Refueling Water Tank Level Had Setpoint Out of Tolerance.Caused by Setpoint Drift in Channel Circuit. Setpoint Readjusted
References
LER-79-035-03L, LER-79-35-3L, NUDOCS 8001110653
Download: ML17266A123 (1)

LER-1979-035, /03L-0:on 791126,during Surveillance Test,One Channel of Refueling Water Tank Level Had Setpoint Out of Tolerance.Caused by Setpoint Drift in Channel Circuit. Setpoint Readjusted

Event date:
Report date:
3351979035R03 - NRC Website

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AEtOATOATS SO EVENT OESCAIPTION ANO PAOBAELE CONSEQUENCES Qlo Durin a surveillance test one of four channels (Channel C) of Refueling Water. Tank Level in the Engineered Safeguards Actuation System was found with a setpoint slightly out of tolerance.

The other three re'dundant

~08 were within s ecification.

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See LERs 335-77-32 77-48 and 78-1 1

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~09 Water Tank level circuit.

Immediate corrective action was to readjust SYSTEM C*VSE

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The cause a 'ars to have been set oint drift of Channel C

Refuelin the Chan e

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